Fuel supply piping structure, fuel crushing supply system provided with the same, and operation method of fuel supply piping structure

摘要

Even in the case of switching and operating biomass fuel and coal fuel, a fuel supply piping structure that can be configured compactly by sharing a facility as much as possible is provided. An upper pipe 49 connected to the fuel supplier 50 for supplying fuel before grinding to a predetermined supply amount, a lower pipe 45 connected to the grinder 5 to guide fuel to the grinder 5, and an upper pipe It is provided between the 49 and the lower pipe 45, and the exchange part by which the rotary valve 47 and the short pipe were exchangeable is provided.